<!DOCTYPE html>
<html lang="zh-Hans">
  <head>
    <meta charset="utf-8">
    <title>使用 JavaScript 的示例</title>
    <script src="script.js" async>
        document.addEventListener("DOMContentLoaded", function() {
  function createParagraph() {
    let para = document.createElement('p');
    para.textContent = '你点击了这个按钮！';
    document.body.appendChild(para);
  }

  const buttons = document.querySelectorAll('button');

  for(let i = 0; i < buttons.length ; i++) {
    buttons[i].addEventListener('click', createParagraph);
  }
});
    </script>
  </head>
  <body>
    <button>点我呀</button>
  </body>
</html>